Building-block.



Y No. 861,964. PATENTBD JULY so, 1907.

W. P. GAMBBR a; W. A. PINGKNY.

BUILDING BLOCK.

APPLICATION FILED JAN. so. 1907.

\\ III NI'T'ED @Argile A-*TENT ourson.

WILLIAM?. GAMBER AND WILLIAM A. '1?nveKNr,v ors'rAmon, MioHIGAN:

i BUILDING-BLOCK l vSpeeilcation of Letters Patent.

patentes Jury 30,1907.

Application fina January 30,1907. serais. 354,953.

The invention relates to an improvement in building blocks of the type known as hollow bu-ilding blocks which are constructed to provide an intermediate air space. f

The main object oi the ipresentrinvention isthe pro vision of a building block comprising spaced walls which are so arranged and connected as to provide a practically .uninterrupted air space between them and co-extensive with the height and length oi the Walls. I The invention rwill be described in the following specilication, reference being had particularly to the accompanying drawii`"e'in whicl12 Figure lis a perspective view of a building block constructed in accord nce with our invention, Fig. 2 is a horizontal transversesection of the same, Fig. 3 is a vertical transverse section of the sa1ne,Fig. 4 is a top plan oi the sanne, Fig` 5 is atransverse section of the block shown in Fig.` 1, illustrating particularly the means for maintaining the Walls in position after molding and during final setting, Fig. 6 is a section on line 8 -8 of Fig. v, Fig. 7 is a plan view of the block with the wall holding means in applied position.

' 'Referring particularly to the, drawing, our improved building block comprises Walls l and 2, preferably molded of any desired plastic material, and constructed form of connection between the walls 1 and 2, which in this instance comprises duplicate sections of wire, or similar material, Vas 3, which is bent longitudinally into sinuous form to provide cross` vbars 4. The wire sections 3 are embedded in the walls l and 2, being arranged respectively adjacent the upper and lower edges of the walls, with the cross strips' 4 bridging the space betweenl the walls. The rounded portions of By preference the respective strips 3 are ,arranged in relatively inclined positions transverse the block, the

` embedded portions of the strips in one wall being disposed nearer the respective upper and lower edges of that wall than the similarlyembed'ded portion in the opposing wall, as clearly shown in Fig. 3. 4The cross bars 4 of each section are also inclined relative 4to eachv other, as shown in Fig. 4, which in addition to sie reutive inclinations of the respective strips tends to more effectively prevent independent movement of eithei` g wall uuder lateral strain.

In Figs. 5 to 7 inclusive is shown a simple means for properly supporting the walls after molding and during final setting. In carrying' out this feature of the invention, we provide mold plates 8 and 9 designed.

to be arranged against the inner surfaces of the respective walls between the wire sections Iconnecting said wall. "Additional mold plates l0 and 1l are arranged to bear against the respectiveinne-r surfaces of the wall above and below. the Wire connectors, said plates 10 and ll being preferably notched-on their 'lower edges to engage the cross bars of said wire connectors. Wedge keys l2,v in any suitable or desired number areto be driven between the plates 10 and 1l from above and below the blocks, said keys also engaging and spreading the plates 8 and 9. The plates 8 and 9 are preferably inclined 'on their 'respective upper'and lower edges from the inner surfaces of said plates downwardly toward their outer or wall engaging surfaces, so that upon Withdrawal of the wedges 12l said plates 8 and 9 will fall toward each other to facilitate their removal.

The building blocks constructed as described will,

therefore, include side .walls which are maintained in' spaced parallel relation', with the connecting medium of sufficient strength to maintain them in such relation and yet of such size as to afford the minimum obstruction to the air space between thewalls.

In using the blocks from the wall of a building structure, it will be obvious that said Wall will be formed with an intermediate air space which is 'practically co-extensive in Width and height with the wall, thereby affording the maximum resistance to the passage of atmospheric nuences.

ln addition to the advantage oi the maximum airv lng, euch of nld lconnectors huvlngvn series olf-integral sections disposed It un angle to each other and 'M Tangcd throughcitt' the length of the latter) being arranged in 10 the suine nhmie longitudinally of the biockand resneletively inclined with relation to each other.; the epective connectors being inclined relative to the upper and iuwer edges of the walls and to each other.

vin testimony whereof, we atix our signatures in bresence oi two witnesses.

TILLIAM P. GAMBER.

y WU/QLAM A. PINCKNY. 

